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US 2004/0204818 A1Published application
Computer algorithm to estimate particulate filter regeneration rates
AssigneeFord Global Technologies, LLC
InventorsDominic Trudell, Michiel J. van Nieuwstadt
Life of this patent
Estimating the term…
Abstract
A system and method is described for determining degradation of a diesel particulate filter in an engine exhaust system. The method uses information indicative of a regeneration rate, such as regeneration duration. From this, it is possible to determine when particulate filter operation has degraded.
Claims21
A system comprising:
- a computer storage medium having a computer program encoded therein for monitoring a particulate filter in a diesel engine exhaust, said computer storage medium comprising:
- code for determining a parameter indicative of a regeneration rate of said particulate filter;
- and
- code for determining degradation of said particulate filter based on said parameter.
1 more element
A system comprising:
- a computer storage medium having a computer program encoded therein for monitoring a particulate filter in a diesel engine exhaust, said computer storage medium comprising:
- code for determining a start point of a regeneration of said particulate filter;
- code for determining an end point of said regeneration of said particulate filter;
- and
- code for determining degradation of said particulate filter based on said determined start and end.
2 more elements
A system comprising:
- a computer storage medium having a computer program encoded therein for monitoring a particulate filter in a diesel engine exhaust, said computer storage medium comprising:
- code for determining a period of time it takes to regenerate said particulate filter;
- and
- code for determining degradation of said particulate filter based on said determined period.
1 more element
Dependencies are inferred from the claim text.